5.7-liter HEMI Facts and Features

5.7-liter HEMI Facts and Features

The Chrysler Group 5.7-liter HEMI is Elegantly Simple, Delivering Power and Fuel Economy.

No other engine in U.S. history has the heritage and recognition of the Chrysler Group HEMI®. While completely re-engineered from the legendary 426 HEMI V-8 that powered Chrysler muscle cars of the 1960s, the two features that earn the new 5.7-liter HEMI power plant its HEMI name are:

  • The hemispherically shaped combustion chamber designed to accommodate large valves and put the spark plugs close to the center of the combustion chamber.
  • The cross-flow valve arrangement that is perpendicular to the crank-shaft centerline.

Facts and Features:

  • In the Chrysler 300C, Dodge Magnum RT and the all-new 2005 Jeep® Grand Cherokee, the 5.7-liter HEMI is equipped with Chrysler Group’s Multi-Displacement System (MDS), which turns off four of the cylinders when V-8 power is not needed, giving customers up to a 20 percent improvement in fuel economy.
  • The 5.7-liter HEMI engine is an internally balanced pushrod, OHV 90-degree V-8.
  • The cast iron block is a deep-skirt design with cross-bolted main bearing caps.
  • The aluminum cylinder heads feature two valves per cylinder, hemispherical combustion chambers with dual spark plugs and coil-over-plug ignition.
  • An Integrated Air Fuel Module (IAFM) incorporates the function of 26 individual components in the induction and fuel system, thereby reducing cost, weight and engine plant complexity.
  • The 5.7-liter HEMI marks Chrysler Group’s first application of an electronic throttle control in a rear-wheel-drive vehicle.
  • A systematic approach to sealing, using premium elastomeric materials and state-of-the-art practices, helps ensure a leak-free, weep-free engine.
  • The power plant’s simple and efficient design means servicing and repairs are easier and less costly.

Source Of Information: DaimlerChrysler